Murata NXJ1 Isolated 1w single output sm dc/dc converter Datasheet

NXJ1 Series
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Isolated 1W Single Output SM DC/DC Converters
Isolation
Capacitance
%
%
kHz
pF
kHrs
FEATURES
11.5
75
105
66
69.5
80
2
2430
„
Patents pending
NXJ1S0305MC
3.3
5
400
200
8.5
10
25
45
70
72
90
2.5
3065
NXJ1S0505MC
5
5
250
200
12
13.5
20
50
69
73.5
205
2.5
1988
NXJ1S1205MC
12
5
110
200
6
8.5
22
45
69
72
110
2.5
2244
NXJ1S1212MC
12
12
115
83
4.5
5
15
40
65
71
125
2.5
3473
„
ANSI/AAMI ES60601-1, 2 MOOP, 1MOPP
Recognition pending
NXJ1S1215MC
12
15
120
67
4
5
15
40
69
71
135
2.5
3208
„
4.2kVDC Isolation “Hi Pot Test”
INPUT CHARACTERISTICS
„
Lower Profile
„
UL60950 Recognition pending
Parameter
„
Substrate Embedded Transformer
„
Automated Manufacture
„
Industry Standard Footprint
„
Short Circuit Protection3
„
Halogen Free
PRODUCT OVERVIEW
The NXJ1 series is a new range of low cost, lower
profile, fully automated manufacture surface
mount DC/DC converters. The NXJ1 series
automated manufacturing process with substrate
Embedded Transformer, offers increased product
reliability and repeatability of performance in a
halogen free, iLGA inspectable package. The NXJ1
series, industry standard footprint is compatible
with existing designs.
Voltage range
Input reflected ripple
current
mVp-p
MTTF2
Switching
Frequency (Typ)
%
10.5
Efficiency (Min)
%
333
Output Ripple
& Noise (Max)
mA
400
Output Ripple
& Noise (Typ)
mA
3.3
Output Current
V
3.3
Output Voltage
V
NXJ1S0303MC
Order Code1
Nominal Input
Voltage
Efficiency (Typ)
Load Regulation
(Max)
Load Regulation
(Typ)
Rated Input Current
SELECTION GUIDE
Conditions
Min.
Typ.
Max.
Units
Continuous operation, 3V input types
Continuous operation, 5V input types
Continuous operation, 12V input types
3V input
5V input
12V input
2.97
4.5
10.8
3.3
5.0
12
6
2
2
3.63
5.5
13.2
V
Typ.
Max.
mA p-p
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Isolation voltage
Resistance
Flash tested for 1 minute
Viso= 1000VDC
4200
10
Units
VDC
GΩ
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated power
Voltage set point accuracy
TA=-40°C to 85°C
See tolerance envelope
Min.
Line regulation
High VIN to low VIN
0505 variant
All other variants
Typ.
Max.
Units
1.0
W
1.15
1.1
1.2
1.2
%/%
Typ.
Max.
Units
85
125
°C
TEMPERATURE CHARACTERISTICS
The NXJ1 series has a MSL rating 2, and is compatible with a peak reflow solder temperature of
245ÚC as per J-STD-020 and J-STD-075.
Parameter
Conditions
Min.
Specification
Storage
Product temperature rise above ambient
Cooling
All output types
-40
-50
All output types
Free air convection
16
ABSOLUTE MAXIMUM RATINGS
Input voltage VIN, NXJ1S03 types
Input voltage VIN, NXJ1S05 types
Input voltage VIN, NXJ1S12 types
For full details go to
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5.5V
7V
15V
1. Components are supplied in tape and reel packaging, please refer to package specification section. Orderable part numbers are
NXJ1S0505MC-R7 (180 pieces per reel), or NXJ1S0505MC-R13 (800 pieces per reel).
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
3. Please refer to short circuit application notes.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_NXJ1.A01 Page 1 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NXJ1 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 4.2kVDC for 1 minute.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no specific agency approvals, such as the NXJ1 series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or
60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part
could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must
be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to
safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials,
construction and environment. The NXJ1 series has a PCB embedded isolated transformer, using FR4 as an insolation barrier between primary and secondary windings. While parts
can be expected to withstand several times the stated test voltage, the isolation capability does depend on the FR4 insulation properties. Any material, including FR4 is susceptible
to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against
repeated high voltage isolation testing, but if it is absolutely required, that the voltage should be reduced by 20% from specified test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the insulation is always supplemented by a further insulation system
of physical spacing or barriers.
SAFETY APPROVAL
ANSI/AAMI ES60601-1
The NXJ1 series is pending recognition by Underwriters Laboratory (UL) to meet ANSI/AAMI ES60601-1 medical safety standard providing the following MOOP (Means Of Operator
Protection), and MOPP (Means Of Patient Protection). 2 MOOP and 1 MOPP based upon a working voltage of 200Vrms.
UL 60950
The NXJ1 series is pending recognition by Underwriters Laboratory (UL) to UL 60950 for reinforced insulation to a working voltage of 200Vrms.
FUSING
The NXJ1 Series of converters are not internally fused so to meet the requirements of UL an anti-surge input line fuse should always be used with ratings as defined below.
Input Voltage, 3.3V: 1A
Input Voltage, 5V: 0.5A
Input Voltage, 12V: 0.25A
All fuses should be UL recognized and rated to at least the maximum allowable DC input voltage.
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KDC_NXJ1.A01 Page 2 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less
C2
than 100mΩ at 100 kHz
C3
100nF multilayer ceramic capacitor, general purpose
R1
450Ω resistor, carbon film, ±1% tolerance
R2
50Ω BNC termination
T1
3T of the coax cable through a ferrite toroid
RLOAD
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
-
R1
+
T1
R2
Y INPUT
Output
-
R LOAD
RoHS COMPLIANCE, MSL AND PSL INFORMATION
This series is compatible with Pb-Free soldering systems and is also backward compatible with Sn/Pb soldering systems.
The NXJ1 series has a process, moisture, and reflow sensitivity classification of MSL2 PSL R7F as defined in J-STD-020
and J-STD-075. This translates to: MSL2 = 1 year floor life, PSL R7F = Peak reflow temperature 245°C with a
limitation on the time above liquidus (217°C) which for this series is 90sec max. The pin termination finish on this product
series is Gold with a plating thickness of 0.12 microns.
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KDC_NXJ1.A01 Page 3 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
TOLERANCE ENVELOPES
The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading.
NXJ1S0303MC
NXJ1S0305MC
8%
5%
0%
-5%
1%
Output Voltage
Output Voltage
4%
-5%
-10%
10
25
50
75
100
25
10
50
75
100
Output Load Current (%)
Output Load Current (%)
NXJ1S0505MC
NXJ1S1205MC
9%
4%
-2%
Output Voltage
Output Voltage
6%
0%
-1%
-4%
-8%
10
25
75
50
Output Load Current (%)
100
10
NXJ1S1212MC
25
75
50
Output Load Current (%)
100
NXJ1S1215MC
6%
4%
Output Voltage
2%
-2%
10
25
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75
50
Output Load Current (%)
100
Output Voltage
3%
0%
0%
-3%
10
25
75
50
Output Load Current (%)
100
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KDC_NXJ1.A01 Page 4 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
EFFICIENCY VS LOAD
3V Input
80
70
Efficiency (%)
60
50
NXJ1S0303MC
40
NXJ1S0305MC
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
5V Input
80
70
Efficiency (%)
60
50
NXJ1S0505MC
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
12V Input
80
70
Efficiency (%)
60
50
NXJ1S1205MC
40
NXJ1S1212MC
NXJ1S1215MC
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
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KDC_NXJ1.A01 Page 5 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
TEMPERATURE DERATING
The derating graphs are based on the following airflow conditions, for a component mounted on a 25mm x 25mm copper covered pcb and are provided for information
only. Actual performance in an application is likely to differ from these results, and a customer should evaluate the thermal environment the NXJ1 is used in, to achieve a
recommended maximum component surface temperature of 85°C for the NXJ1S0303SC or 105°C for all other variants.
NXJ1S0305MC
1
1
0.8
0.8
still air
0.6
100 lfm
200 lfm
0.4
Power (W)
Power (W)
NXJ1S0303MC
still air
0.6
100 lfm
200 lfm
0.4
400 lfm
400 lfm
0.2
0.2
0
0
50
60
70
80
50
Ambient Temperature (°C)
NXJ1S0505MC
NXJ1S1205MC
1
1
still air
0.6
100 lfm
200 lfm
0.4
400 lfm
Power (W)
Power (W)
70
80
0.8
0.8
still air
0.6
100 lfm
200 lfm
0.4
400 lfm
0.2
0.2
0
0
50
60
70
50
80
Ambient Temperature (°C)
60
70
80
Ambient Temperature (°C)
NXJ1S1212MC
NXJ1S1215MC
1
1
0.8
still air
0.6
100 lfm
200 lfm
0.4
400 lfm
Power (W)
0.8
Power (W)
60
Ambient Temperature (°C)
still air
0.6
100 lfm
200 lfm
0.4
400 lfm
0.2
0.2
0
0
50
60
70
Ambient Temperature (°C)
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80
50
60
70
80
Ambient Temperature (°C)
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KDC_NXJ1.A01 Page 6 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
APPLICATION NOTES
Short Circuit Performance
NXJ1 short circuit protection is not continuous and varies with output voltage and temperature as shown in the following graph:
1000
100
Time (s)
NXJ1S0303MC
NXJ1S0305MC
10
NXJ1S0505MC
NXJ1S1205MC
NXJ1S1212MC
1
NXJ1S1215MC
0.1
25
35
45
55
65
75
Ta (°C)
Advisory Notes
Minimum Load
The NXJ1 series is not hermetically sealed, customers should ensure that parts
are fully dried before input power application.
The minimum load to meet datasheet specification is 10% of the full rated load
across the specified input voltage range. Lower than 10% minimum loading will
result in an increase in output voltage, which may rise to typically double the
specified output voltage if the output load falls to less than 5%.
Capacitive Loading & Start Up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs with resistive only load, and with added output capacitance of
47μF, are shown in the table below.
Typical Start-Up Wave Form
Resistive Load and
Resistive Load
47μF
Part Number
Start-up time (μS)
NXJ1S0303MC
40
190
NXJ1S0305MC
95
1700
NXJ1S0505MC
50
1100
NXJ1S1205MC
35
600
NXJ1S1212MC
80
2650
NXJ1S1215MC
100
4000
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended. The voltage rating should be at least
twice (except for 15V output), the rated output voltage of the DC/DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor should
be such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be >20MHz.
L, μH
NXJ1S0303MC
NXJ1S0305MC
NXJ1S0505MC
NXJ1S1205MC
NXJ1S1212MC
NXJ1S1215MC
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Inductor
SMD
Through Hole
Capacitor
C, μF
L
Power
Source
DC
C
Load
DC
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KDC_NXJ1.A01 Page 7 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
EMC FILTERING AND SPECTRA
FILTERING
The module includes a basic level of filtering. The following plots show typical spectra with EN 55022 Curve A Quasi-Peak EMC limit, with the addition of an input capacitor
of 2.2μF and input inductor of 22μH.
0305
80
80
70
70
60
60
50
50
dBuV
dBuV
0303
40
40
30
30
20
20
10
10
0
1.00E+05
1.00E+06
1.00E+07
0
1.00E+05
1.00E+08
1.00E+06
Frequency (Hz)
80
80
70
70
60
60
50
50
40
30
20
20
10
10
1.00E+07
0
1.00E+05
1.00E+08
1.00E+06
Frequency (Hz)
70
60
60
50
50
dBuV
dBuV
80
70
40
30
20
20
10
10
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1.00E+08
40
30
1.00E+07
Frequency (Hz)
1.00E+07
1215
80
1.00E+06
1.00E+08
Frequency (Hz)
1212
0
1.00E+05
1.00E+07
40
30
1.00E+06
1.00E+08
1205
dBuV
dBuV
0505
0
1.00E+05
1.00E+07
Frequency (Hz)
1.00E+08
0
1.00E+05
1.00E+06
Frequency (Hz)
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KDC_NXJ1.A01 Page 8 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
PACKAGE SPECIFICATIONS
Mechanical Dimensions
Pin Connections
13.72 [0.540]
(8.13 [0.320])
SMA PICKUP POINT
Pin
Function
1
3
7
8
14
-Vin
+Vin
-Vout
+Vout
NC
NC - No connection.
Dimension Information
S
#
SEATING PLANE
SMA PICKUP POINT
(TOP OF PCB)
3.11±0.19 [0.122±0.007]
0.1 (0.004)
2.54 [0.100]
S
x5 PINS
Variant
Dim #
NXJ1S0303MC
NXJ1S0305MC
NXJ1S0505MC
NXJ1S1205MC
NXJ1S1212MC
NXJ1S1215MC
4.36±0.35mm
[0.172±0.014]
4.16±0.35mm
[0.164±0.014]
All dimensions in mm(inches), Controlling dimension is
mm. Tolerances (unless otherwise stated) ±0.25(0.010).
1
3
7
10.46 [0.412]
14
8
1.52 [0.060]
x 5 PLACES 0.61 [0.024]
7.62 [0.300]
3.05 [0.120]
All dimensions in mm(inches), Controlling dimension is mm. Tolerances (unless otherwise stated) ±0.25 (0.010).
Weight: 1.12g
Recommended Footprint Details
7.62 [0.300]
x5 PLACES
2.30 [0.091]
9.40 [0.370]
RECOMMENDED
ISOLATION BARRIER
x5 PLACES
1.00 [0.039]
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2.54 [0.100]
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KDC_NXJ1.A01 Page 9 of 10
NXJ1 Series
Isolated 1W Single Output SM DC/DC Converters
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS
REEL PACKAGING DETAILS
30.4 [1.197] MAX#
Ø332 [13.071] MAX
OR
Ø180 [7.087] MAX
[
+0.020
Ø13.0 +0.5
-0.2 Ø0.512 -0.008
]
GOODS
ENCLOSURE
SECTION
LEADER SECTION
400 [15.748] MIN
TRAILER SECTION
160 [6.299] MIN
100 [3.937]
MIN
1.5 [0.059]
MIN ##
Ø20.2 [Ø0.795]
MIN
Carrier tape pockets shown are
illustrative only - Refer to carrier tape
diagram for actual pocket details.
Tape & Reel specifications shall conform with current EIA-481 standard
Unless otherwise stated all dimensions in mm(inches)
Controlling dimension is mm
# Measured at hub
## Six equi-spaced slots on 180mm/7” reel
Reel Quantity: 7” - 180 or 13” - 800
TAPE OUTLINE DIMENSIONS
2.0 [0.079]
Ø1.5 [Ø0.059] MIN
1.75 [0.069]
[
+0.004
+0.10
Ø1.5 -0.00 Ø0.059 -0.000
[
4.0 [0.157]
11.5 [0.453]
22.25 [0.876] MIN
24.3 [0.957] MAX
14.3 [0.563]#
COVER TAPE
3° MAX
0.6 [0.024] MAX
11.0 [0.433]#
5.0 [0.197]
16.0 [0.630]
DIRECTION OF UNREELING
Tape & Reel specifications shall conform with current EIA-481 standard
Unless otherwise stated all dimensions in mm(inches) ±0.1mm (±0.004 Inches)
Controlling dimension is mm
Components shall be orientated within the carrier tape as indicated
# Measured on a plane 0.3mm above the bottom pocket
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
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This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2015 Murata Power Solutions, Inc.
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KDC_NXJ1.A01 Page 10 of 10
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